Trolley-wheel for electrically-propelled vehicles



(No Model.)

L. PFINGST.

TROLLEY WHEEL FOR ELEGTEICALLY PROPELLBD VEHICLES.

No. 438,359. Patented Oct. 14, 1890. v

'I/IIIIIIIYIIIIIIIIIIIIIII I UNITED STATES PATENT OFFICE.

LOUIS PFINGST, OF BOSTON, MASSACHUSETTS.

TROLLEY-WHEEL FOR ELECTR'ICALLY-PROPELLED VEHICLES;

SPECIFICATION forming part of Letters Patent No. 438,359, dated October14:, 1890.

Application filed July 14, 1890.

.To all whom it may concern:

Be it known that I, LoUIs PFINGST, of Boston, in the county of Suffolk,State of Massachusetts, have invented certain new and use 5 fulImprovements in Trolley-Wheels for Electrically-Propelled Vehicles, ofwhich the following is a description sufficiently full, clear,

. and exact to enable any person skilled in the art or science to whichsaid invention appertains to make and use the same, reference being hadto the accompanying drawings, forming part of this specification, inwhich- Figure 1 is a side elevation of my improved trolley, and Fig. 2 avertical transverse section of the same.

Like letters of reference indicate corresponding parts in the differentfigures of the drawings.

My .invention relates to means for mounting the trolley-wheel on thepole of electric ally-propelled vehicles, it being especially adaptedfor use on electrically propelled street-cars where an overheadconductingwire is employed; and it consists in certain novel featureshereinafter fully set forth and claimed, the object being to produce asimpler, cheaper, and more effective device of this character than isnow in ordinary use.

The nature and operation of the improvement will be readily understoodby all conversant with such matters from the following explanation.

In the drawings, A represents the trolleypole, which may consist of ametallic tube, and is pivoted centrally to the monitor-roof of the carin the usual manner. An approximately oval-shaped plate B has a sleeve dformed at its lower end, adapted to receive the top of the pole A. Aflange f on said sleeve proj ects inwardly toward the main plate B. Acompanion plate has a boss 9, adapted to rest on the flange f.Inwardly-projecting tubes h t' are formed on the plates B O,whichregister with each other when in position, and are fitted to receive ascrew-bolt- 70, whereby said plates are secured together. The plates B Oare tapped centrally and connected through the opening thus formed by ascrewbolt m, which is surrounded by a metallic 5o bushing 10. Metallicrings q are disposed on Serial No, 358,645. (No model.)

said bushing adjacent to the inner face of said plates, and arerespectively disposed in annular grooves formed therein.

Thetrolley-wheel His j ournaled on the bushing 19, said wheel beinggrooved on its periph- 5 5 ery at r to receive the overhead wireIandprovided with annular rabbets t at its center. Balls 00 are disposed inthe rabbets of the wheel H and bear on the bushing p and against therings q, said balls forming a ballbearing for said wheel. By turning outthe screws m 70 and removing the face-plate O the different parts may bereadily detached and replaced when worn. By providing the wheel H withthe ball-bearings, as described, said wheel will retain its position onthe over head wire without binding while passing around the curves inthe track much more readily than wheels mounted in the ordinary way.Moreover, the wheel H as it becomes worn can be replaced by removing thefaceplate in the manner described without unshipping the pole.

Having thus explained my invention,what I claim is- 1. In a device ofthe character described, a face-plate provided with a sleeve or socketfor the trolley-pole, in combination with a companion plate boltedthereto and a trolleywheel journaled by ball-bearings between said Soplates.

2. In a device of the character described, a faceplate provided with asocket for the trol-. ley-pole, a companion plate bolted thereto, abushing on a bolt connecting said plates, a trolley-wheel havingcentrally-arranged annular rabbets, and balls disposed in said rabbetsand bearing on said bushing, substantially as and for the purpose setforth.

3. In a device of the character described, the combination of aface-plate provided with a socket for the trolley-pole, a companionface-plate bolted thereto, a bushing ona bolt connecting saidplates,wear-rings disposed on said bushing and in grooves in saidplates, a 5 rabbeted trolley-wheel, and balls disposed in said rabbetsand bearing against said bushing and rings, substantially as and for thepurpose set forth.

4. In a device of the character described,

the plate B, provided with the socket d, in combination with the plate0, secured thereto by bolts on k, the bushing 19 on the bolt m, thegrooved wheel H, provided with the rabbets t, and the bearings 00,arranged to operate substantially as described.

5. In a device of the character described, two face-plates detachablysecured together and adapted to be attached to the trolleypole, incombination with a trolley-Wheel jour- 1o naled by ball-bearings betweensaid plates, substantially as described.

LOUIS PFINGST.

Witnesses:

O. M. SHAW, K. DURFEE.

